h1,
h2,
body {
  margin: 0;
  padding: 0;
}

.nav-bar {
  display: flex;
  height: 60px;
  text-align: center;
  align-items: center;
}

.nav-bar .content {
  flex: 1;
}

.nav-bar .left,
.nav-bar .right {
  width: 60px;
}
